Fluorite

Heights Quarry, Westgate, Weardale, North Pennines Orefield, County Durham  United Kingdom

Specimen size: 4.4 × 3.0 × 2.6 cm = 1.73” × 1.18” × 1.02”
Main crystal size: 1.5 × 0.7 cm = 0.59” × 0.28”